Rendering animation problem
It looks to me like you may have a bad path in the Output directory. From your screenshot, it looks like 'Science'. Replace that with an actual path to an existing directory for which you have read/write permissions.  

If you click the little folder icon at the far right of that field, you can browse to your desired render directory.

Ensure that the path you enter in that field ends with a trailing slash (or backslash if on Windows)